Technical Summary of Ext2/Ext3/Ext4 data recovery difficulties in Linux

D-RecoveryForLinux features 1. deletion and restoration of Ext3/Ext4 have been hard to implement since ancient times. The only hope is to find the residual inode information from the log (Journal) file. Before the advent of D-RecoveryForLinux, some Linux data recovery experts passed...

Features of D-Recovery For Linux

 

1. deletion and recovery for Ext3/Ext4 have been difficult to implement since ancient times. The only hope is to find the residual inode information from the log (Journal) file.

Before the advent of D-Recovery For Linux, some Linux data Recovery experts manually searched For residual inode information using the Winhex tool, and then performed semi-manual semi-automatic data Recovery after deletion.

D-Recovery For Linux enables direct scanning of file system logs (Journal) files, collecting and analyzing all residual inode information, and listing the required data. Which of the following is not the perfect match?

Ext3/Ext4 the file space allocated by the file system is limited, and the inode information recorded is also limited. if you delete millions of files, you can) file

Inode information can only be deleted.

2. if the data recovery personnel analyzes the internal structure of some files and knows the distribution of deleted files on the disk, they can manually create the file Inode information to quickly extract the file content.

3. the LVM disk management mode in Linux is relatively complex. Currently, the Linux file system restoration tool on the market does not support the LVM disk partition mode very well.

Excellent management performance. Disk partitions managed by LVM can be allocated across physical hard disks in a logical partition. An LVM Logical Partition can be composed of multiple disks or multiple

A common partition, logical partition space allocation is flexible, once the LVM information is damaged, the logical partition space allocation information is gone. Fortunately, the LVM information is backed up in each hard disk or partition.

Not all information is damaged. in D-Recovery For Linux, you can recombine LVM information and read the data in the partition.

This article is from the blog "Ting tingliang Data Recovery Technology Blog ".